Wire tightening device

Abstract

The present invention provides a wire tacking device. [Solution] The wire tightening device 100 includes a housing 110, a spool located inside the housing 110 for winding the wire, a dial cover 150 rotatably mounted on the top of the housing 110 and providing a central entry hole, and an operating part including a fixing plate 170 that covers the top surface of the dial cover 150 and maintains restricted rotation relative to the housing 110, and a clutch rotatably mounted on the fixing plate 170, wherein the dial cover 150 maintains a fixed height relative to the housing 110, and the fixing plate 170 can maintain a fixed, non-rotating state independent of the rotation of the dial cover 150.

Description

【Technical Field】 【0001】 The present invention relates to a wire tightening device, and more particularly to a wire tightening device that can be attached to footwear, clothing, hats, and other sundries to tighten or release a wire. 【Background Art】 【0002】 Strings, wires, etc. can generally be used for tightening and loosening footwear, clothing, hats, accessories, medical equipment, bags, sports equipment, etc. A wire tightening device can be used to facilitate the tightening and loosening of strings and wires. 【0003】 The wire tightening device disclosed in WO2014 / 197721 can include a housing, a spool, a driving element such as a pawl disc, a tension element such as a knob, and a shaft mounting element mounted on the lower part of the housing. 【0004】 In the wire tightening device, the knob can selectively bind the pawl disc and the spool while moving up and down. When the pawl disc and the spool are not bound, the wire wound around the spool can be easily loosened, but when the pawl disc and the spool are bound, the wire wound around the spool cannot be loosened. When the knob is rotated in the locking direction in the state where the pawl disc and the spool are bound, the rotational force can be transmitted to the spool through the pawl disc and the wire can be rotated in the winding direction. 【0005】 In the conventional wire tightening device, the knob moves directly up and down, and the knob itself rotates in order to rotate the pawl disc and the spool in the downward movement state. In addition, since a space for accommodating the pawl disc, the spool, and the upper part of the housing must be formed inside the knob, the rotating knob cannot be made small and thin. 【0006】 Furthermore, while the top surface of the knob may display the trademark of the product manufacturer that uses a wire diaphragm or diaphragm, the fact that the knob must rotate makes it difficult to display the trademark, reducing its commercial applicability. Additionally, its overall bulk makes it difficult to blend in with the surrounding design. [Overview of the Initiative] [Problems that the invention aims to solve] 【0007】 The present invention provides a wire throttling device that can maintain a fixed appearance that is compatible with the surrounding design, even when considering the rotation of the wire throttling device. 【0008】 The present invention provides a wire throttling device that allows the rotating dial or knob of the wire throttling device to be made thin and small, and solves the problem of the entire wire throttling device becoming bulky. 【0009】 This invention provides a wire throttling device that offers strong resistance to external contamination and facilitates partial cleaning. [Means for solving the problem] 【0010】 According to an exemplary embodiment of the present invention for achieving the aforementioned objectives of the present invention, the wire tightening device includes a housing, a spool located within the housing for winding a wire, a dial cover rotatably mounted on the top of the housing and providing a central entry hole, and an actuation unit including a fixing plate covering the top surface of the dial cover and maintaining restricted rotation relative to the housing, and a clutch rotatably mounted on the fixing plate, wherein the dial cover maintains a fixed height relative to the housing, and the fixing plate maintains a fixed, non-rotating state independent of the rotation of the dial cover. 【0011】 The fixing plate of the operating part covers the top surface of the dial cover, maintaining a non-rotating state, thereby maintaining the design consistency of the mounted item, and allowing the dial cover to be fixed in place and form an overall thin thickness. 【0012】 The fixing plate partially exposes a portion of the dial cover, allowing the user to grip the side of the dial cover and rotate it in the locking direction. The fixing plate may include at least one extended arm that accommodates the side of the dial cover and contacts the side of the housing, and the end of the arm may be constrained to the side of the housing so that the fixing plate remains stationary even when the dial cover rotates. 【0013】 Corresponding to the arm of the fixed plate, a restraining groove can be formed on the side of the housing to restrain the end of the arm, and the restraining groove can be formed in the vertical direction so that the end of the arm can move in the vertical direction. 【0014】 The operating part includes a central axis formed integrally with the fixed plate, and the clutch can rotate around the central axis. A hook can be formed on the bottom surface of the fixed plate to secure the clutch, and the clutch is rotatably fixed to the fixed plate and can move up and down together with the fixed plate. 【0015】 The central axis may include a central slit formed along the axial direction and a through projection formed outward at the lower part of the central axis. The spool may include a central hole through which the central axis passes, and the central hole may be formed with a shape and dimensions such that the lower part of the central axis can pass only when the through projection is retracted with the help of the central slit. 【0016】 The clutch moves up and down with the fixed plate, but is mounted rotatably on a central axis and can rotate with the dial cover. When the clutch and spool are mutually connected, the clutch can transmit the rotation of the dial cover to the spool, and while moving up and down with the fixed plate, the clutch can switch between being connected to the spool and being disconnected. 【0017】 For this purpose, at least one guide projection can be formed inside the entry hole of the dial cover, and at least one guide groove can be formed on the outer surface of the clutch, aligned vertically to correspond to the guide projection in the entry hole. Of course, forming a guide groove in the dial cover and a corresponding guide projection on the outer surface of the clutch is also included in the present invention. 【0018】 The dial cover includes a pole disc mounted on its bottom surface, which may include a ring body formed around the entry hole and retaining wings extending spirally from the ring body. The retaining wings may extend outward from the ring body like a cantilever, and the ends of the retaining wings may engage with housing gears formed on the inner surface of the housing. The pole disc can prevent or limit rotation in the opposite direction, causing the dial cover to rotate in one direction relative to the housing. 【0019】 Guide protrusions can be formed directly on the dial cover, but if a pole disc is to be formed, guide protrusions can also be formed on the ring body. Similarly, if a guide groove must be formed on the dial cover, the guide groove can be formed directly on the dial cover, but if a pole disc is to be to be to be to be to be to the ring body. 【0020】 The actuarial part is located on the top of the spool and can move up and down, and can selectively move up or down relative to the spool through the interaction of the through projection and the central hole. Furthermore, with the central axis extended, the actuarial part can be temporarily fixed in the upper or lower position. 【0021】 The clutch can rotate together with the dial cover while the fixed plate is not rotating. For this purpose, a projection or groove can be formed on the inside of the entry hole, and a groove or projection can be formed on the outer surface of the clutch corresponding to the projection or groove of the entry hole. 【0022】 A pawl disc can be mounted on the bottom surface of the dial cover. The pawl disc can include a plurality of retaining fins, and the ends of the retaining fins can engage with a housing gear formed inside the housing. 【0023】 The housing can include a cylinder body that houses a spool and a bottom portion mounted to the lower portion of the cylinder body. The lower portion of the cylinder body can be open, and a coupling flange can be formed at the lower end of the bottom portion for fixing a wire drawing device to the periphery. 【0024】 The lower end of the cylinder body includes a support jaw protruding inward, and the support jaw can maintain the spool at a certain depth. 【0025】 According to another exemplary embodiment of the invention, the wire drawing device can include a housing that houses a spool, a dial cover that maintains a fixed height without moving up and down with respect to the housing, a fixing plate that covers the dial cover and maintains a non-rotating state with respect to the housing, and a clutch that selectively transmits the rotation of the dial cover to the spool. 【0026】 Conventionally, a pawl disc having a clutch function is mounted on the bottom surface of the knob, and there is a problem that the size of the knob is very large because the upper end of the housing must be accommodated even when the knob rises while accommodating the pawl disc. 【0027】 In addition, there are cases where the pawl disc has to be temporarily separated from the housing gear while moving up and down, and there are cases where the retaining fins of the pawl disc are damaged while being restored to their original positions. To prevent this, the resistance of the retaining fins may be limited, or there may be cases of idling. 【0028】 However, the dial cover according to this embodiment can appropriately maintain its height in a compact manner in order to maintain a fixed height, and the size of the entire wire drawing device can also be made small. 【0029】 The clutch can move up and down together with the fixed plate and rotate together with the dial cover. For this purpose, a clutch gear is formed on the bottom surface of the clutch, a spool gear that meshes with the clutch gear is formed on the upper surface of the spool, and at least one guide protrusion can be formed inside the entry hole of the dial cover, and at least one guide groove arranged vertically can be formed on the outer surface of the clutch corresponding to the guide protrusion of the entry hole. 【0030】 According to an exemplary and other embodiment of the invention, the wire drawing device can include a housing that houses a spool, a dial cover that rotates with respect to the housing, a pole disk that is attached to the dial cover and rotates together to always maintain a coupled state with a housing gear formed on the inner surface of the housing so that the dial cover rotates in one direction with respect to the housing, and a fixed plate that maintains a non-rotating state with respect to the housing. 【Advantages of the Invention】 【0031】 The wire drawing device of the present invention can maintain a fixed appearance that matches the surrounding design even considering the rotation of the dial for drawing, and in particular, can maintain a design that matches the surrounding design even in clothing or fashion accessories that are sensitive to appearance. 【0032】 The wire drawing device of the present invention can not only reduce the number of parts, but also form a thin and small rotating dial or knob, and can solve the problem that the entire wire drawing device becomes enlarged. 【0033】 The wire drawing device of the present invention blocks external contamination and the inflow of foreign objects, and can be easily wiped up even if contamination occurs. [Brief explanation of the drawing] 【0034】 [Figure 1] This is a drawing illustrating a wire tightening device according to one embodiment of the present invention. [Figure 2] Figure 1 is a diagram illustrating an example of the wire tightening device used in footwear. [Figure 3] Figure 1 is a diagram illustrating the coupling structure and its components of the wire tacking device. [Figure 4] This diagram specifically illustrates the dial cover and operating mechanism of the wire throttling device shown in Figure 1. [Figure 5] This is a diagram illustrating the AA section in Figure 1. [Figure 6] This is a drawing illustrating a wire tightening device according to one embodiment of the present invention. [Figure 7] Figure 6 is a diagram illustrating the coupling structure and its components of the wire tacking device. [Modes for carrying out the invention] 【0035】 Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings, but the present invention is not limited or restricted by these embodiments. In this description, equal numbers refer to substantially identical elements, and what is described in the other drawings under the same rules may be described by reference, and what is obvious to those skilled in the art or is repetitive may be omitted. 【0036】 As an example, the following embodiment describes a case where the wire tightening device is attached to the center of the footwear, but the position of the wire tightening device can be applied to other positions on the footwear, and it can also be used on a variety of other equipment and places where tightening is required, such as clothing, sports equipment, hats, bags, medical equipment, protective stands, etc. 【0037】 Figure 1 is a diagram illustrating a wire tightening device according to one embodiment of the present invention; Figure 2 is a diagram illustrating an example of the wire tightening device of Figure 1 being used in footwear; Figure 3 is a diagram illustrating the coupling structure and its components of the wire tightening device of Figure 1; Figure 4 is a diagram specifically illustrating the dial cover and operating part of the wire tightening device of Figure 1; and Figure 5 is a diagram illustrating the AA cross-section of Figure 1. 【0038】 Figures 1 to 5 show that the wire tightening device 100 according to this embodiment may include a housing 110, a spool 140, a dial cover 150, a clutch 180, and a fixing plate 170. The housing 110 can fix the wire tightening device 100 to a specific position on the footwear 10, and the dial cover 150 can maintain a fixed height relative to the housing 110. The clutch 180 and the fixing plate 170 act as operating parts, moving up and down relative to the housing 110 and the dial cover 150, and controlling the fastening and unfastening between the dial cover 150 and the spool 140. 【0039】 As shown in Figure 2, the wire tightening device 100 according to this embodiment is attached to one side of the footwear 10 and can adjust the tightness of the footwear 10 by tightening or loosening the wire 20. In particular, the fixing plate 170 is located on the upper part of the dial cover 150 and can maintain a fixed, non-rotating state relative to the housing 110. 【0040】 Since the fixed plate 170 is located at the top of the wire tightening device 100 and can maintain a non-rotating state, the uniformity of the appearance design of the footwear 10 can be maintained. For example, assuming that the trademark of the footwear 10 is "AAA", the intermediate "A" can also be represented on the top surface of the wire tightening device 100 to prevent damage to the overall brand image. 【0041】 In conventional wire shaping devices, the top knob rotates, making it difficult to express trademarks or designs that blend well with the surrounding area through the outer surface of the knob. Furthermore, the wire shaping device being mounted separately from the surrounding components can disrupt the overall design consistency of the product. 【0042】 For this purpose, the structure of the wire tightening device 100 can be seen through Figure 3. Figures 3(a) and 3(b) show the disassembled state of the overall components viewed from above and below, respectively. 【0043】 The housing 110 includes a cylinder body 120 and a bottom 130, and can house a spool 140 inside. The spool 140 is structured to allow winding of wire 20, and the wire 20 connected to the inside of the housing 110 through a wire inlet / outlet 124 of the housing 110 can be wrapped around the outer surface of the spool 140. 【0044】 The bottom portion 130 is connected to the lower part of the cylinder body 120, and a connecting flange 132 is formed around it, allowing the wire tightening device 100 to be fixed to a product such as footwear 10 by various methods such as sewing or adhesive. 【0045】 In this embodiment, the housing 110 is formed by assembling two parts: a cylinder body 120 and a bottom 130. However, in some cases, the housing 110 may be provided as one part or three or more parts that house the spool 140. 【0046】 A spool 140 can be housed inside the housing 110. The spool 140 can rotate freely inside the housing 110, a wire 20 can be wound around its outer surface, and a spool gear 142 can be formed on its upper surface. The spool gear 142 can be formed on the upper surface of the spool 140 with a hole in the center, or it can be formed in a ratchet shape or other gear shape. As will be described later, the spool gear 142 can mesh with the clutch gear 182 of the clutch 180, and the rotation of the dial cover 150 can be transmitted to the spool 140 through the clutch 180. 【0047】 The dial cover 150 can rotate while maintaining a fixed height on the top of the housing 110. For this purpose, a projection can be formed on the upper end of the cylinder body 120, but this is for maintaining the height of the dial cover 150 and is not intended to limit the upper end boundary within the vertical range of movement of the dial cover 150. 【0048】 The dial cover 150 includes a projection on its bottom surface to which a pole disc 160 can be secured. The pole disc 160 may be provided in a hollow form corresponding to an entry hole 152 formed in the center of the dial cover 150, or it may include a plurality of retaining wings 162 that extend in a spiral shape around a hollow ring body. The ends of the retaining wings 162 may be formed in a latch or pawl shape and can engage with a housing gear 126 formed on the upper inner surface of the cylinder body 120. 【0049】 The pole disc 160 is integrally fixed to the dial cover 150, allowing the dial cover 150 to rotate easily relative to the housing 110 in the direction permitted by the pole disc 160, and either not be able to rotate in the opposite direction or rotate very difficultly. In some cases, rotation in the opposite direction may result in damage or deformation of the retaining vane 162. 【0050】 Because the pole disc 160 is mounted on the bottom surface of the dial cover 150, the pole disc 160 can also maintain a fixed height relative to the housing 110. 【0051】 In this embodiment, the stopper fins 162 of the pole disc 160 are integrally formed around the ring body, but in some cases the stopper fins can be attached to the bottom surface of the dial cover in a separate form, and they can also be formed in various structures other than a cantilever shape for unidirectional rotation. 【0052】 Multiple guide protrusions 164 are formed on the inside of the ring body of the pole disc 160, and the guide protrusions 164 can engage with the guide grooves 184 of the clutch 180. By using the connection between the guide protrusions 164 and the guide grooves 184, the clutch 180 can move up and down relative to the dial cover 150, and even if the fixing plate 170 of the operating part and the clutch 180 move up and down, the dial cover 150 and the pole disc 160 can maintain their connection with the clutch 180. 【0053】 If the clutch 180 moves to the upper position and the spool gear 142 and clutch gear 182 are not tightly bound together, the rotation of the dial cover 150 may be transmitted to the clutch 180 but not to the spool 140, which means that the spool 140 may also rotate within the housing 110 in a direction that unwinds the wire 20. 【0054】 A clutch 180 can be positioned in the entry hole 152 of the dial cover 150, and the clutch 180 can move up and down from the top of the dial cover 150 together with the fixing plate 170. For this purpose, the fixing plate 170 may include at least one extended arm 172 that accommodates the side of the dial cover 150 and contacts the side of the housing 110. 【0055】 In this embodiment, a restraining groove 122 can be formed on the side surface of the housing 110, and the end of the arm 172 of the fixing plate 170 can be restrained in the restraining groove 122. Therefore, even if the dial cover 150 rotates, the fixing plate 170 can remain fixed to the housing 110, that is, maintain a non-rotating state with limited rotation. 【0056】 The restraint groove 122 can be formed in the vertical direction to the extent that it does not interfere with the vertical movement of the arm 172 when the fixing plate 170 moves up and down. In this embodiment, it is formed on the side of the cylinder body 120, but it can also be formed on the bottom or at the boundary between the cylinder body and the bottom. 【0057】 A central axis 190 is formed on the bottom surface of the fixing plate 170, and mounting hooks for attaching the clutch 180 can be formed around the central axis. The clutch 180 can be rotatably mounted on the bottom surface of the fixing plate 170 while coupled to the mounting hooks, and even if the clutch 180 rotates together with the dial cover 150, its rotation may not be forcibly transmitted to the fixing plate 170. 【0058】 As shown in Figure 4, the central axis 190 can be integrally formed in the center of the bottom surface of the fixed plate 170, or it can become the rotation center of the clutch 180 and extend to the central hole of the spool 140. 【0059】 The central axis 190 may include a central slit 192 formed along the axial direction and a through projection 194 formed outward at the lower part of the central axis 190. A bottleneck section can be formed on the inner surface of the central hole of the spool 140, where the inner diameter narrows and then widens, and the lower end of the central axis 190 can pass through the bottleneck section of the central hole through the interaction of the central slit 192 and the through projection 194. 【0060】 The central axis 190 is formed downward from the bottom surface of the fixing plate 170. When the uppermost fixing plate 170 moves downward, the passing projection 194 is positioned below the bottleneck section, allowing the clutch 180 to be temporarily fixed in close contact with the spool 140. When the fixing plate 170 moves upward, the passing projection 194 is positioned above the bottleneck section, limiting the transmission of rotation between the clutch 180 and the spool 140. 【0061】 The actuation mechanism, including the fixed plate 170 and the clutch 180, is located above the spool 140 and the dial cover 150 and can move up and down, and can move elastically or semi-automatically above or below the spool 140 through the interaction of the through projection 194 and the central hole. The actuation mechanism is located outside the dial cover 150, allowing for a compact internal structure design, and the fixed plate 170 is located outside, allowing the wire tightening device to blend in with the footwear and surrounding components to maintain a non-rotating state. 【0062】 As shown in Figure 5, the lower end of the cylinder body 120 can include a support jaw 128 that protrudes inward. The support jaw 128 can be formed on the entire or a portion of the lower end of the cylinder body 120, and when assembling the spool 140, it can prevent the spool 140 from going in beyond a certain depth and maintain a fixed height. 【0063】 Even when the lower part of the cylinder body 120 is open, the spool 140 is supported by the support jaw 128, so that the rotation of the spool 140 is not obstructed during overall surface contact. 【0064】 Figure 6 is a diagram illustrating a wire throttling device according to one embodiment of the present invention, and Figure 7 is a diagram illustrating the coupling structure and its components of the wire throttling device of Figure 6. 【0065】 Referring to Figures 6 and 7, the wire tightening device 200 according to this embodiment may include a housing 210, a spool 240, a dial cover 250, a clutch 280, and a fixing plate 270. For reference, in this embodiment the fixing plate 270 may be formed in a different shape than in previous embodiments, and other details can be found in the corresponding descriptions of previous embodiments. 【0066】 The wire tightening device 200 according to this embodiment is attached to one side of footwear or the like, and the wire can be tightened or loosened to adjust the tightness of the footwear or the like. Furthermore, by slightly reducing the size of the fixing plate 270 and increasing the exposed area of ​​the dial cover 250, the user can grip the dial cover more easily. Of course, it is also possible to use fixing plates of various shapes for this purpose. 【0067】 The structure of the wire tacking device 200 can be seen in Figures 3(a) and 3(b), which show the wire tacking device 200 in a disassembled state viewed from above and below, respectively. As shown in Figure 3, the structure and operation other than the fixing plate 270 can be found in the description of the previous embodiment. 【0068】 As described above, the invention has been described with reference to preferred embodiments, but those skilled in the art will understand that the invention can be modified and altered in various ways without departing from the spirit and scope of the invention as described in the following claims. [Explanation of Symbols] 【0069】 100 Wire throttling device 110 Housing 120 Cylinder Body 130 Bottom 140 Spool 150 Dial Cover 160 Pole Disc 170 Fixed plate 180 Clutch

Claims

[Claim 1] housing; A spool located within the aforementioned housing for winding the wire; A dial cover rotatably mounted on the top of the housing and providing a central entry hole; and An operating part including a fixing plate that covers the upper surface of the dial cover and maintains restricted rotation relative to the housing, and a clutch that is rotatably mounted on the fixing plate; A wire tightening device characterized in that the dial cover maintains a fixed height relative to the housing, and the fixing plate maintains a fixed, non-rotating state independent of the rotation of the dial cover. [Claim 2] The wire tightening device according to claim 1, characterized in that the fixing plate partially exposes a part of the dial cover. [Claim 3] The wire tightening device according to claim 2, wherein the fixing plate includes at least one extended arm that accommodates the side surface of the dial cover and contacts the side surface of the housing, and the end of the arm is constrained to the side surface of the housing. [Claim 4] The wire tightening device according to claim 3, characterized in that a restraining groove for restraining the end of the arm is formed vertically on the side surface of the housing, and the restraining groove guides the movement of the operating part up and down. [Claim 5] The wire tightening device according to claim 1, characterized in that the operating part includes a central axis formed integrally with the fixing plate, and the clutch rotates about the central axis and moves up and down together with the fixing plate. [Claim 6] The central axis includes a central slit formed along the axial direction and a through projection formed outward at the lower part of the central axis. The spool includes a central hole through which the central axis passes, and the central hole is formed in a shape and dimensions such that the lower part of the central axis can pass only when the through projection is retracted with the help of the central slit. The wire tacking device according to claim 5, characterized in that the operating part is located on the upper part of the spool and is selectively moved up and down and temporarily fixed by the interaction of the passing projection and the central hole. [Claim 7] The wire tightening device according to claim 5, characterized in that the clutch rotates together with the dial cover. [Claim 8] The wire tightening device according to claim 7, characterized in that at least one guide projection is formed inside the entry hole of the dial cover, and at least one guide groove is formed on the outer surface of the clutch, arranged vertically in a manner corresponding to the guide projection of the entry hole. [Claim 9] The dial cover includes a pole disc mounted on its bottom surface, the pole disc includes a ring body formed around the entry hole and retaining wings extending spirally from the ring body, the ends of which engage with housing gears formed on the inner surface of the housing, the pole disc causing the dial cover to rotate in one direction relative to the housing, The wire tightening device according to claim 8, characterized in that the guide projection is formed on the ring body. [Claim 10] The wire tightening device according to claim 7, characterized in that at least one guide groove is formed inside the entry hole of the dial cover, and at least one guide projection is formed on the outer surface of the clutch, arranged vertically in a manner corresponding to the guide groove of the entry hole. [Claim 11] The dial cover includes a pole disc mounted on its bottom surface, the pole disc includes a ring body formed around the entry hole and retaining wings extending spirally from the ring body, the ends of which engage with housing gears formed on the inner surface of the housing, the pole disc causing the dial cover to rotate in one direction relative to the housing, The wire tacking device according to claim 10, characterized in that the guide groove is formed in the ring body. [Claim 12] The wire tightening device according to claim 1, characterized in that the clutch rotates together with the dial cover while the fixed plate is in a non-rotating state. [Claim 13] The wire tightening device according to claim 12, characterized in that a projection or groove is formed on the inside of the entry hole, and a groove or projection is formed on the outer surface of the clutch corresponding to the projection or groove of the entry hole. [Claim 14] The wire tightening device according to claim 1, comprising a support jaw protruding inward from the lower end of the housing, wherein the spool maintains a constant depth by the support jaw. [Claim 15] The wire throttling device according to claim 1, wherein the housing includes a cylinder body that houses the spool and a bottom that is attached to the lower part of the cylinder body, the lower part of the cylinder body is open and a coupling flange is formed at the lower end frame of the bottom. [Claim 16] In a wire throttling device, Housing for spool; A dial cover that maintains a fixed height relative to the housing without vertical movement; A fixing plate that covers the dial cover and maintains a non-rotating state relative to the housing; and A wire tightening device including a clutch that selectively transmits the rotation of the dial cover to the spool. [Claim 17] The wire tightening device according to claim 16, characterized in that the clutch moves up and down together with the fixing plate and rotates together with the dial cover. [Claim 18] The wire tightening device according to claim 16, characterized in that a clutch gear is formed on the bottom surface of the clutch and a spool gear that meshes with the clutch gear is formed on the upper surface of the spool. [Claim 19] The wire tightening device according to claim 16, characterized in that the fixing plate includes an arm that bypasses the dial cover and is restrained by the housing. [Claim 20] In a wire throttling device, Housing for spool; A dial cover that rotates relative to the housing; A pole disc mounted on the dial cover and rotating together with it, maintaining constant engagement with a housing gear formed on the inner surface of the housing, so that the dial cover rotates in one direction relative to the housing; and A wire throttling device including a fixing plate that maintains a non-rotating state relative to the housing;

Images